check: try reloading modules

Optionally reload the module between each test to try to pinpoint slab
cache errors and whatnot.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Eryu Guan <guaneryu@gmail.com>
Signed-off-by: Eryu Guan <guaneryu@gmail.com>

1 files changed, 9 insertions, 0 deletions

diff --git a/check b/check
index 5ffa8777..415e0ff3 100755
--- a/check
+++ b/check
@@ -810,6 +810,15 @@ function run_section()
 			_check_dmesg || err=true
 		fi
 
+		# Reload the module after each test to check for leaks or
+		# other problems.
+		if [ -n "${TEST_FS_MODULE_RELOAD}" ]; then
+			_test_unmount 2> /dev/null
+			_scratch_unmount 2> /dev/null
+			modprobe -r fs-$FSTYP
+			modprobe fs-$FSTYP
+		fi
+
 		# Scan for memory leaks after every test so that associating
 		# a leak to a particular test will be as accurate as possible.
 		_check_kmemleak || err=true